Good, a German Mennonite family name, originally Guth. Among the pioneers of the Good family in America were Jacob and Christian Good, who immigrated from the Palatinate in the early 18th century and settled in eastern Lancaster County, Pennsylvania. In this region there is both a village named Goodville in the western part of the county near Elizabethtown, and a Good Mennonite Church (MC). Christian Good (1772-1839), grandson of the first Christian, served as minister at Bowmansville, PA. Jacob Good, son of the first Jacob, moved to the Shenandoah Valley of Virginia, where his descendants have been active, including Bishop Daniel (1781-1850) and Bishop Christian (18421916). Descendants of both Lancaster and Virginia Goods have moved to Mennonite congregations in Ontario, Ohio, Indiana, Illinois, and Missouri. Among the latter were Bishop John S. Good (1811-1899) of Page County., Iowa, Bishop A. C. Good (1881- ) of Sterling, IL, Deacon Sol R. Good of Sterling, IL, and Bishop Kenneth Good (1910- ) of Morton, IL. Preacher Noah G. Good (1904- ) was dean of the Lancaster Mennonite School, I. B. Good was a prominent Lancaster County preacher, and Andrew Good and C. N. Good (1869-1967) were outstanding elders in the Mennonite Brethren in Christ Church.

Some Amish Mennonite Guths who immigrated from Alsace-Lorraine in the 19th century to Illinois and Iowa have retained the spelling Guth.